Journal bearing



G. R. COLEMAN 2,206,077 I JOURNAL BEARING Filed March 4, 1936 2 Sheets-Sheet 1 x a u r a HIM MQ %NVENZOR. M 5% ATTORNEYS.

Filed March 4, 1936 2 Sheets-Sheet 2 INVENTOR. Maw

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Patented July 2, 1940 UNITED STATES PATENT OFFICE JOURNAL BEARING Gilbert R. Coleman, Bellevue, N. Y., assignor to William H. Croft, Chicago, Ill.

Application March 4, 1936, SerialNo. 67,063

6 Claims. (01. cos-79.1)

This invention relates in general to improvereference numeral ll indicates the body portion ments in bearings and, while it has more parof a non-rotary member of a journal bearing, ticular reference to journal bearings used on called the brass, which may be of any suitable railway rolling stock, it will be apparent that form. The body portion H is provided witha certain features of the invention have other and lower concave surface .IZ to which is applied a 5 more general valuable application. lining 13 of Babbitt or other suitable material,

A principal object of the invention is the prowhich is applied in the usual manner to the survision of means for automatically cooling a jourface l2 after it has been tinned or soldered so nal bearing in the most effective manner. that it will adhere firmly thereto.

Another important object of the invention is Formed in the lower surface l2 of the body,

the provision of tubular conduits extending portion H, by machining or by being molded through such a journal bearing, which conduits therein, are a plurality of transverse grooves or serve as passageways for the automatic circula channels l4. Any desired number of these 0 tion of lubricating oil from one side of the jourgrooves may be provided and they are preferably nal to the other to improve lubrication and respaced in parallel relationship to each other and duce friction and wear. extend completely across the lower surface l2.

A further object of the invention is the pro- In each of these grooves i4 is positioned an arcuvision of oil circulating means for automatically ate conduit l5 which is preferably formed of cooling the tinned or soldered concave lower surmetal tubing, such as copper, although any other I face of the brass to whichthe lining of Babbitt suitable material, which is impervious to the ac- 0 or other suitable material is secured, which surtion of the oil used for lubricating the bearing,

face is most affected by excessive heat. and shape may be employed, and is completely Another important object of the invention is enclosed, as shown in Fig. 3. the provision of means associated with a journal The conduits l5 may be positioned in the :5 bearing for automatically lubricating the upper ov s 14 either before after the Surface I215 surface of the journal exteriorly of and adjacent tinned- The lining s then m0lded or otherthe bearing. Wise secured to the body portion H to maintain A further object of the invention is the pro-- the conduits IS in place. Those portions of the vision of a journal bearing having oil passagegrooves I4 which are not filled by the conduits I10 ways therein which are formed by separately inl5 will function as additional retaining means for serted conduits, which greatly facilitates manuthe lining, since the lining will fill in such porfacture and relining of the bearing. tions of the grooves, as will beseen in Figs. 1

Numerous other objects and advantages of the and 4. invention will be apparent as it is better under- The lower surface of the lining I3 is formed to stood from the following description, which, substantially conform to the upper portion of the taken in connection with" the accompanying usual journal l6 (shown in broken lines in Fig. drawings, discloses a preferred embodiment 4) in a well-known manner. A pair of longithereof. tudinally extending grooves or channels I! are In the drawings, machined or molded in this lower surface of the Figure 1 is a bottom plan View of a journal lining l3, and terminate short of the ends of 0 hearing embodying the invention; the lining as best seen in Fig. 1, although they Fig. 2 is a view similar to Fig. 1, showing the may be extended to either or both ends of the bearing without the lining and the conduits lining, if desired. I mounted in the grooves on the concave surface of Referring to Fig. 4, the channels i! are curved :15 the body portion; in cross-section to provide a fish hook shaped Fig. 3 is a detail longitudinal sectional view inner surface, the deepest portion of which is at of one of the conduits; the upper part of the channel, as indicated at I3.

Fig. 4 is a vertical section taken substantially The lower part of each of the channels I! termion the line i-4 of Fig. l; nates at a point l9 which is spaced a short dis- Fig. 5 is an end view of a modified form of tance away from the outer surface of the journal 50 bearing; and IS. The bearing surface may be so shaped that Fig. 6 is a bottom plan view with parts broken contact between the journal and the bearing is away, similar to Fig. 2, of the body portion of the confined to that portion of the bearing between bearing of Fig. 5. the upper ends 20 of the channels ll. An aper- Referring more particularly to the drawings, hire or bore 2! communicates between the upper portion l8 of each groove or channel H and each of the conduits I5. These bores 2| are preferably drilled through the lining l3 and into the conduits I5 as a final step in the manufacture of the bearing.

The form of journal bearing shown in Figs. 5 and 6 is identical to that above described, except that one or more end conduits 22 are provided. These conduits are similar to the conduits l5 with the addition of a horizontally disposed extension 23 formed integrally therewith and extending at right angles to the main body from the mid-point thereof. tion ll of the journal bearing is provided with a suitable longitudinal groove in each end of the upper part of the surface l2, whichextends inwardly to the end groove M. The extensions 23 of the end conduits 22 are adapted to lie in one of these longitudinal grooves, and terminate at their outer ends adjacent the end surface of the bearing member. The extension 23 is shown in Fig. 5 as being completely surrounded by the lining I3 only because the lining is rounded at that end and extends up above the lower surface I2 of the body portion ,II, which latter surface is shown in dotted lines below the extension 23.

In this type of journal bearing lubricating oil is supplied to the outer surface of the journal in the usual manner by means of saturated waste disposed within the journal housing (not shown) oil will be collected in the inbound channel I1 and be forced through the associated apertures 2| into the conduits l5, and thence into the channel I! at the outbound side of the journal.

This circulating action will effectively cool the bearing and assure uniform distribution of the journals oil.

The portion of the journal bearing most affected by overheating is the tinned or soldered surface I2 as the solder or other bond may become weakened or destroyed by heat. The circulation of the oil through the conduits l which are positioned directly adjacent the tinned surface l2, results not merely in the most effective cooling of this tinned surface, but substantially eliminates possibility of destroying the bond.

In addition, contact between the oil and the solder or other bond between the lining and the body of the bearing is substantially eliminated by the provision of. separate conduits for the circulation of the oil, as above described. This is a further distinct advantage in view of the fact that one of the major reasons for failure of such journal bearings results from the deteriorating action of the oil on the bond employed between the body portion and the lining.

In the modification of Figs. 5 and 6 some of the oil which is forced through the end conduits 22 will flow through the extensions 23 to automatically lubricate the upper surface of the i6 exteriorly of and adjacent the journal bearing.

It will be readily apparent that the manufacture of these journal hearings will be greatly .facilitated by the provision of the grooves M- The body porand the use of separate conduits l5. In the relining of the bearing, the removal of the Babbitt I3 by use of heat or the like will cause the conduits l5 to fall out of the grooves I4. The ad.- dition of a new lining to the body portion II will be a relatively simple matter as new and unpunctured conduits l5 may be used, and the problem of keeping the lining metal from clogging the conduits will not be presented.

, It is thought that the invention and many of its attendant advantages will be understood from the foregoing description, and it will be apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the forms hereinbefore described being merely preferred embodiments thereof.

I claim:

1. A journal bearing comprising a brass having a concave surface, a plurality of transversely extending grooves in said surface, a copper tube in each of said grooves, a lining cast on said concave surface and securely attached to said brass, whereby said lining maintains said tubes in position and fills the portions of the grooves around the tubes to increase the mechanical strength of the bond between the lining and the brass, a longitudinal channel in each side of said lining, and apertures extending through said lining and connecting said tubes and said channels.

2. A journal bearing comprising a body having a concave surface, a plurality of transversely extending grooves in said surface, tubes in said grooves, and a lining cast on said concave surface and securely attached to said body, whereby said lining maintains said tubes in position and fills the portions of the grooves around the tubes to increase the mechanical strength of the joinder structure of the lining and body, said tubes being in communication with a source of lubricant near the sides of said lining by means of outlets in said lining connecting with the tubes.

3. A journal bearing of the type where lubricating oil is carried upwardly by the surface of the journal to the bearing, comprising a body having a concave surface, a plurality of transverse grooves in said surface, oil conductors in said grooves, a lining securely attached to said body and maintaining said conductors in position, and a longitudinal oil collecting channel at each side of said lining and connected with the interior of said conductors, whereby the oil is circulated through said conductors by said journal to cool the joinder structure of said body and said lining.

4. A journal bearing of the type where lubricating oil is carried upwardly by the surface of the journal to the bearing, comprising a brass having a bonded concave surface with a plurality of transversely extending grooves therein, a closed tube disposed in each of said grooves made of a material which is impervious to any deteriorating action of the oil, a lining cast on said bonded surface and thus securely attached to said brass to retain said tubes in place, a longitudinally extending channel in each side of the bearing surface of said lining, and apertures extending through said lining and said tubes to interconnect said tubes and said channels, whereby rotation of said journal will cause oil to fiow through said bearing adjacent said bonded surface to cool the latter, while contact of the oil with said bonded surface will be substantially entirely eliminated. V

5. A journal bearing of the type where lubrieating oil is carried upwardly by the surface of the journal to the bearing, comprising a brass having a soldered concave surface with a plurality of transversely extending grooves therein, a closed copper tube disposed in each of said grooves, a bearing metal lining cast on said soldered surface and thus securely attached to said brass to retain said tubes in place, a longitudinally extending, oil collecting channel in each side of the bearing surface of said lining, and apertures extending through said lining and said tubes to interconnect said tubes and said channels, whereby rotation of said journal will cause oil to flow through said tubes adjacent said soldered surface to cool the latter, while contact of the oil with said soldered surface will be substantially entirely eliminated.

6. A journal bearing of the type where lubricating oil may have access to the end of the bearing, comprising a main body having a bonded concave surface with a transverse groove in said surface adjacent said end of the body, a closed tube disposed in said groove made of a material which is impervious to any deteriorating action of the oil, a bearing metal lining cast on said bonded surface and thus securely attached to said body to retain said tube in place, a longitudinally extending, oil collecting channel in each side of the bearing surface of said lining, and apertures extending through said lining andsaid tube to interconnect said tube and said channels, whereby lubricating oil will be caused to flow through said tube adjacent said bonded surface to cool the latter, and said tube will function as a dam to limit inward progression in a longitudinal direction of any deteriorating action on the bond by the oil which may come in contact with the end portion of the bearing.

GILBERT R; COLEMAN. 

